package com.changgou.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.changgou.goods.dao.*;
import com.changgou.goods.pojo.*;
import com.changgou.goods.service.SpuService;
import com.changgou.util.IdWorker;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service
public class SpuServiceImpl implements SpuService {

    private Logger log = LoggerFactory.getLogger(SpuServiceImpl.class);

    @Autowired
    private IdWorker idWorker;
    @Autowired
    private SpuMapper spuMapper;
    @Autowired
    private SkuMapper skuMapper;
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private BrandMapper brandMapper;
    @Autowired
    private CategoryBrandMapper categoryBrandMapper;
    @Autowired
    private RabbitTemplate rabbitTemplate;

    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Spu findById(String id){
        return  spuMapper.selectByPrimaryKey(id);
    }


    /**
     * 增加
     * @param spu
     */
    @Override
    public void add(Spu spu){
        spuMapper.insert(spu);
    }


    /**
     * 修改
     * @param spu
     */
    @Override
    public void update(Spu spu){
        spuMapper.updateByPrimaryKey(spu);
    }

    /**
     * 删除
     * @param id
     */
    @Override
    public void delete(String id){
        spuMapper.deleteByPrimaryKey(id);
    }


    /**
     * 条件查询
     * @param searchMap
     * @return
     */
    @Override
    public List<Spu> findList(Map<String, Object> searchMap){
        Example example = createExample(searchMap);
        return spuMapper.selectByExample(example);
    }

    /**
     * 分页查询
     * @param page
     * @param size
     * @return
     */
    @Override
    public Page<Spu> findPage(int page, int size){
        PageHelper.startPage(page,size);
        return (Page<Spu>)spuMapper.selectAll();
    }

    /**
     * 条件+分页查询
     * @param searchMap 查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public Page<Spu> findPage(Map<String,Object> searchMap, int page, int size){
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        return (Page<Spu>)spuMapper.selectByExample(example);
    }
    /**
     * @Date: 11:46 2020/3/31
     * @Param: [goods]
     * @return: com.changgou.entity.Result
     * @Description: 新增商品
     **/
    @Override
    public void addGoods(Goods goods) {
        //1.存储spu
        Spu spu = goods.getSpu();
        spu.setId(String.valueOf(idWorker.nextId()));
        spuMapper.insertSelective(spu);
        //2.存储skulist
        saveSkuList(goods);
    }

    /*
        保存skuList列表
     */
    private void saveSkuList(Goods goods) {
        Spu spu = goods.getSpu();
        //分类名称查找
        Integer category3Id = spu.getCategory3Id();
        Category category = categoryMapper.selectByPrimaryKey(category3Id);
        //品牌名称查询
        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());
        /*
            维护品牌分类列表
         */
        if(null != category && null != brand){
            CategoryBrand categoryBrand = new CategoryBrand();
            categoryBrand.setBrandId(brand.getId());
            categoryBrand.setCategoryId(category.getId());
            //select count(*) from tb_category_brand where brand_id = and category_id=
            int i = categoryBrandMapper.selectCount(categoryBrand);
            if(0 == i){
                categoryBrandMapper.insertSelective(categoryBrand);
            }
        }
        List<Sku> skuList = goods.getSkuList();
        if(!CollectionUtils.isEmpty(skuList)){
            for (Sku sku : skuList) {
                sku.setId(String.valueOf(idWorker.nextId()));
                sku.setCreateTime(new Date()); //设置创建时间
                sku.setUpdateTime(new Date()); //设置更新时间
                sku.setSpuId(spu.getId()); //设置spuid
                //设置分类名称+分类id（三级）
                if(null != category){
                    sku.setCategoryId(category.getId());
                    sku.setCategoryName(category.getName());
                }
                //设置品牌名称
                if(null != brand){
                    sku.setBrandName(brand.getName());
                }
                /*
                    需要对spec规格json字符串判空否则存入null前端会解析失败，
                    前端是根据json格式去解析的
                    如果为空设置为：    {}
                    spec : {'颜色': '银色', '版本': '6GB+128GB'}
                 */
                String spec = sku.getSpec();
                if(StringUtils.isEmpty(spec)){
                    spec =  "{}";
                    sku.setSpec(spec);
                }
                /*
                    设置skuName= spuName+spec遍历
                 */
                Map<String,String> sepcMap = JSON.parseObject(spec, Map.class);
                String skuName = spu.getName();
                for (Map.Entry<String, String> entry : sepcMap.entrySet()) {
                    skuName += " " + entry.getValue();
                }
                sku.setName(skuName);
                skuMapper.insertSelective(sku);
            }
        }
    }

    /**
     * @Date: 14:21 2020/3/31
     * @Param: [id]
     * @return: com.changgou.entity.Result
     * @Description: 根据spuID查找商品
     **/
    @Override
    public Goods findGoodsById(String id) {
        Goods goods = new Goods();
        //1.查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //2.查询skuList
        if(null != spu){
            goods.setSpu(spu);
            Example example = new Example(Sku.class);
            Example.Criteria criteria = example.createCriteria();
            criteria.andEqualTo("spuId", id);
            List<Sku> skuList = skuMapper.selectByExample(example);
            goods.setSkuList(skuList);
        }
        return goods;
    }

    /**
     * @Date: 14:28 2020/3/31
     * @Param: [goods]
     * @return: com.changgou.entity.Result
     * @Description: 商品更新
     **/
    @Override
    public void updateGoods(Goods goods) {
        //1.spu更新
        Spu spu = goods.getSpu();
        spuMapper.updateByPrimaryKeySelective(spu);
        //2.skuList更新
        //根据spuId删除skulist
        Example example = new Example(Sku.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("spuId", spu.getId());
        skuMapper.deleteByExample(example);
        //保存skuList
        saveSkuList(goods);
    }

    /**
     * @Date: 14:44 2020/3/31
     * @Param: [spuId]
     * @return: com.changgou.entity.Result
     * @Description: 商品审核
     **/
    @Override
    public void auditGoods(String spuId) {
        //方式一

        /*Spu spu = new Spu();
        spu.setId(spuId);
        spu.setStatus("1"); //审核通过
        spuMapper.updateByPrimaryKeySelective(spu);*/

        //方式二  课件版
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        spu.setStatus("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * @Date: 14:50 2020/3/31
     * @Param: [spuId]
     * @return: com.changgou.entity.Result
     * @Description:  商品上架
     **/
    @Override
    public void pushGoods(String spuId) {

        //第一种方式
       /* Spu spu = new Spu();
        spu.setId(spuId);
        spu.setIsMarketable("1"); //上架
        spuMapper.updateByPrimaryKeySelective(spu);*/

       //第二种方式 课件版
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        String status = spu.getStatus();
        if("0".equals(status)){ //未审核通过
            throw  new RuntimeException("未审核通过商品不可以上架");
        }else{
            spu.setIsMarketable("1"); //上架
            spuMapper.updateByPrimaryKeySelective(spu);
            //上架成功需要将spuId发送至goods_up_exchange
            rabbitTemplate.convertAndSend("goods_up_exchange", "", spuId);
            log.info("商品上架成功，发送消息至goods_up_exchange交换机， spuID:  {}", spuId);
        }
    }

    /**
     * @Date: 15:00 2020/3/31
     * @Param: [spuId]
     * @return: com.changgou.entity.Result
     * @Description: 商品下架
     **/
    @Override
    public void downGoods(String spuId) {
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        spu.setIsMarketable("0"); //下架
        spuMapper.updateByPrimaryKeySelective(spu);
        rabbitTemplate.convertAndSend("goods_down_exchange", "", spuId);
        log.info("商品下架成功，发送消息至goods_down_exchange交换机， spuID:  {}", spuId);
    }

    /**
     * @Date: 9:23 2020/4/2
     * @Param: [spuId]
     * @return: com.changgou.entity.Result
     * @Description: 商品逻辑删除
     **/
    @Override
    public void deleteLogic(String spuId) {
        //1.根据id查询spu
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        //2.判断spu是否为上架状态 ----》上架状态不可删除需要先下架
        if(("1").equals(spu.getIsMarketable())){//上架状态
            throw new RuntimeException("已上架商品不可删除");
        }else {
            //3.下架状态----》设置is_delete=1 代表逻辑删除  ---- 》 update
            spu.setIsDelete("1");//删除
            spu.setStatus("0"); //删除商品需要变为未审核状态
            spuMapper.updateByPrimaryKeySelective(spu);
        }

    }

    /**
     * @Date: 9:35 2020/4/2
     * @Param: [spuId]
     * @return: com.changgou.entity.Result
     * @Description:  还原商品
     **/
    @Override
    public void restore(String spuId) {
        //1.根据id查询spu
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        //2.判断spu是否为删除状态----》
        if("1".equals(spu.getIsDelete())){ // 删除---》 还原
            spu.setIsDelete("0"); //未删除
            spuMapper.updateByPrimaryKeySelective(spu);
        }else {
            // 未删除---》抛异常
            throw new RuntimeException("未删除商品无需还原");
        }
    }

    /**
     * @Date: 9:42 2020/4/2
     * @Param: [spuId]
     * @return: com.changgou.entity.Result
     * @Description: 商品物理删除
     **/
    @Override
    public void deleteGoods(String spuId) {
        //1.根据id查询spu
        Spu spu = spuMapper.selectByPrimaryKey(spuId);
        //2.判断spu是否有删除---》
        if("1".equals(spu.getIsDelete())){
            //----》 删除----》物理删除
            spuMapper.deleteByPrimaryKey(spuId);
        }else {
            ///---> 未删除---》抛异常
            throw new RuntimeException("未删除商品不可以删除");
        }
    }



    /**
     * 构建查询对象
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 主键
            if(searchMap.get("id")!=null && !"".equals(searchMap.get("id"))){
                criteria.andEqualTo("id",searchMap.get("id"));
           	}
            // 货号
            if(searchMap.get("sn")!=null && !"".equals(searchMap.get("sn"))){
                criteria.andEqualTo("sn",searchMap.get("sn"));
           	}
            // SPU名
            if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
                criteria.andLike("name","%"+searchMap.get("name")+"%");
           	}
            // 副标题
            if(searchMap.get("caption")!=null && !"".equals(searchMap.get("caption"))){
                criteria.andLike("caption","%"+searchMap.get("caption")+"%");
           	}
            // 图片
            if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
                criteria.andLike("image","%"+searchMap.get("image")+"%");
           	}
            // 图片列表
            if(searchMap.get("images")!=null && !"".equals(searchMap.get("images"))){
                criteria.andLike("images","%"+searchMap.get("images")+"%");
           	}
            // 售后服务
            if(searchMap.get("saleService")!=null && !"".equals(searchMap.get("saleService"))){
                criteria.andLike("saleService","%"+searchMap.get("saleService")+"%");
           	}
            // 介绍
            if(searchMap.get("introduction")!=null && !"".equals(searchMap.get("introduction"))){
                criteria.andLike("introduction","%"+searchMap.get("introduction")+"%");
           	}
            // 规格列表
            if(searchMap.get("specItems")!=null && !"".equals(searchMap.get("specItems"))){
                criteria.andLike("specItems","%"+searchMap.get("specItems")+"%");
           	}
            // 参数列表
            if(searchMap.get("paraItems")!=null && !"".equals(searchMap.get("paraItems"))){
                criteria.andLike("paraItems","%"+searchMap.get("paraItems")+"%");
           	}
            // 是否上架
            if(searchMap.get("isMarketable")!=null && !"".equals(searchMap.get("isMarketable"))){
                criteria.andEqualTo("isMarketable",searchMap.get("isMarketable"));
           	}
            // 是否启用规格
            if(searchMap.get("isEnableSpec")!=null && !"".equals(searchMap.get("isEnableSpec"))){
                criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
           	}
            // 是否删除
            if(searchMap.get("isDelete")!=null && !"".equals(searchMap.get("isDelete"))){
                criteria.andEqualTo("isDelete",searchMap.get("isDelete"));
           	}
            // 审核状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
           	}

            // 品牌ID
            if(searchMap.get("brandId")!=null ){
                criteria.andEqualTo("brandId",searchMap.get("brandId"));
            }
            // 一级分类
            if(searchMap.get("category1Id")!=null ){
                criteria.andEqualTo("category1Id",searchMap.get("category1Id"));
            }
            // 二级分类
            if(searchMap.get("category2Id")!=null ){
                criteria.andEqualTo("category2Id",searchMap.get("category2Id"));
            }
            // 三级分类
            if(searchMap.get("category3Id")!=null ){
                criteria.andEqualTo("category3Id",searchMap.get("category3Id"));
            }
            // 模板ID
            if(searchMap.get("templateId")!=null ){
                criteria.andEqualTo("templateId",searchMap.get("templateId"));
            }
            // 运费模板id
            if(searchMap.get("freightId")!=null ){
                criteria.andEqualTo("freightId",searchMap.get("freightId"));
            }
            // 销量
            if(searchMap.get("saleNum")!=null ){
                criteria.andEqualTo("saleNum",searchMap.get("saleNum"));
            }
            // 评论数
            if(searchMap.get("commentNum")!=null ){
                criteria.andEqualTo("commentNum",searchMap.get("commentNum"));
            }

        }
        return example;
    }

}
